18961943

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{997}}^1$

素因数の和:1047

約数の個数: 32

約数和(自身を含む): 26826240

約数和(自身を除く): 7864297

約数列:

[1, 7, 11, 13, 19, 77, 91, 133, 143, 209, 247, 997, 1001, 1463, 1729, 2717, 6979, 10967, 12961, 18943, 19019, 76769, 90727, 132601, 142571, 208373, 246259, 997997, 1458611, 1723813, 2708849, 18961943]

約数ペア:

[(1, 18961943), (7, 2708849), (11, 1723813), (13, 1458611), (19, 997997), (77, 246259), (91, 208373), (133, 142571), (143, 132601), (209, 90727), (247, 76769), (997, 19019), (1001, 18943), (1463, 12961), (1729, 10967), (2717, 6979)]